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Now showing items 61-70 of 136
Role of Cl on diffusion of cu in in2s3 layers prepared by ion layer gas reaction method
(University of Nairobi, 2015)
Ion layer gas reaction (ILGAR) method allows for deposition of Cl-containing and Cl-free In2S3 layers from InCl3 and In(OCCH3CHOCCH3)3 precursor salts, respectively. A comparative study was performed to investigate the ...
Management of cassava green mite Mononychellus progresivus (Acari: Tetranychidae) in different agro-ecological zones of Kenya
(2015)
The cassava green mite (CGM), Mononychellus progresivus Doreste, causes serious leaf damage on cassava
leading to low root yield in the dry savanna regions of Africa. A study to compare effectiveness of the predatory
phytoseiid ...
Modeling returns and unconditional variance in risk neutral world for liquid and illiquid market.
(University of Nairobi, 2015)
This article seeks to model daily asset returns using log-ARCH-Lévy type model which is expected to reproduce most of the stylized features of financial time series data (such as volatility clustering, leptokurtic nature of log returns, joint covariance structure and aggregational Gaussianity) that are empirically found in different types of market. In addition, unconditional variance of daily log returns in risk neutral world of different conditional heteroscedastic models is derived. A key observation is that liquid markets and illiquid market may not have the same underlying dynamics. For instance empirical analysis based on S&P500 index log returns as a liquid market do not have autoregressive part in their first moments while in Nairobi Securities Exchange NSE20 index there is strong presence of autoregressive dynamics of order three, i.e. AR(3). Higher moments of both markets are serially correlated....
Morphological and RAPD-marker characterization of Melia volkensii (Gürke) in vitro plants regenerated via direct and indirect somatic embryogenesis.
(Univeristy of Nairobi, 2015)
Somaclonal variation induced in vitro during tissue culture can be a problem in clonal micropropagation of elite plants. This study investigated the extent of morphological and genetic similarity or dissimilarity between ...
Experimental investigation on performance, emission and combustion characteristics of croton megalocarpus biodiesel blends in a direct injection diesel engine
(University of Nairobi, 2015-01-01)
The emission, performance and combustion characteristics of croton biodiesel blends were tested in a direct injection (DI) single
cylinder four stroke diesel engine. The physico-chemical properties of the biodiesel blends ...
Modelling an Institutional Mobile Learning Readiness Analyser
(University of Nairobi, 2015)
Due to the affordability, ease of use and availability of mobile devices, many people in Africa and developing countries have acquired at least a mobile device. The penetration of mobile devices places many learning ...
Antiplasmodial and cytotoxic activities of the constituents of turraea robusta and turraea nilotica
(University of Nairobi, 2015-08)
Ethnopharmacological relevance
Turraea robusta and Turraea nilotica are African medicinal plants used for the treatment of a wide variety of diseases, including malaria. The genus Turraea is rich in limonoids and other ...
Variability and trends in past, current and future climate in East Africa
(University of Nairobi, 2015)
This study evaluates the climate variability and change in past, current and future climate in East Africa (EA) using high resolution regional models under the CO-ordinated Regional climate Downscaling Experiment (CORDEX). ...
Contributions of Atlantic ocean to June - August rainfall over Uganda and Western Kenya
(University of Nairobi, 2015)
This study investigates the contributions of Atlantic Ocean to June-August rainfall over Uganda and western Kenya (KU). The study utilized the following datasets: precipitation from the Global Precipitation Climatology ...